Best open source email security products

Email security is of paramount concern in any organization. A significant percentage of malware is delivered via email, on the premise that an unsuspecting user will open the message, allowing the malware payload onto the user’s machine. From there, malware can worm its way into the network and wreak various kinds of havoc, often undetected, sometimes for months or even years. We decided to review four open source products to see if they could deliver enterprise-grade security. The four products were CipherMail, MailScanner Scrollout F1 and hMailServer. Read the full review.